The Int32x32To64 function multiplies two signed 32-bit integers, returning a signed 64-bit integer result. The function performs optimally on all Win32 platforms.
LONGLONG Int32x32To64(
LONG Multiplier, // the first signed 32-bit integer
LONG Multiplicand // the second signed 32-bit integer
);
The return value is the signed 64-bit integer result of the multiplication.
This function is implemented on all platforms by optimal inline code: a single multiply instruction that returns a 64-bit result.
Please note that the function's return value is a 64-bit value, not a LARGE_INTEGER structure.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in winnt.h.
Large Integer Operations Overview, Large Integer Operations Functions, UInt32x32To64